BoringAuth is a collection of tools for user authentication. BoringAuth is a fork of LibreAuth that chooses to use the actively developed ring crypto crate over the dead rust-crypto crate for its crypto primitives.

Ring compatibility chart.

• Password / passphrase authentication
  • no character-set limitation
  • reasonable lenth limit (security vs. DOS)
  • strong, evolutive and retro-compatible password derivation functions
  • crypt() compatibility
• HOTP - HMAC-based One-time Password Algorithm (OATH - RFC 4226)
  • the key can be passed as bytes, an ASCII string, an hexadicimal string or a base32 string
  • customizable counter
  • customizable hash function (sha1, sha256, sha512)
  • customizable output length
  • customizable output alphabet
• TOTP - Time-based One-time Password Algorithm (OATH - RFC 6238)
  • the key can be passed as bytes, an ASCII string, an hexadicimal string or a base32 string
  • customizable timestamp
  • customizable period
  • customizable initial time (T0)
  • customizable hash function (sha1, sha256, sha512)
  • customizable output length
  • customizable output alphabet
  • customizable positive and negative period tolerance
• YubiKey OTP (Yubico)
  • virtual device API
  • client API
  • server API
• U2F - Universal 2nd Factor (FIDO Alliance)
  • virtual device API
  • client API
  • server API

You can find BoringAuth on crates.io and include it in your Cargo.toml:

boringauth = "*"

In order to build BoringAuth, you will need both the rust compiler and cargo.

$ git clone https://github.com/ThinkAlexandria/boringauth.git
$ cd boringauth
$ make
$ make install prefix=/usr

extern crate boringauth;
use boringauth::oath::TOTPBuilder;

let key = "GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ".to_string();
let code = TOTPBuilder::new()
    .base32_key(&key)
    .finalize()
    .unwrap()
    .generate();
assert_eq!(code.len(), 6);

#include <stdio.h>
#include <boringauth.h>

int main(void) {
  struct boringauth_totp_cfg cfg;
  char   code[7], key[] = "12345678901234567890";

  if (boringauth_totp_init(&cfg) != LIBREAUTH_OTP_SUCCESS) {
    return 1;
  }
  cfg.key = key;
  cfg.key_len = sizeof(key);
  if (boringauth_totp_generate(&cfg, code) != LIBREAUTH_OTP_SUCCESS) {
    return 2;
  }

  printf("%s\n", code);

  return 0;
}

$ cc -o totp totp.c -lboringauth
$ ./totp
848085

from ctypes.util import find_library
from struct import Struct
from ctypes import *

class TOTPcfg(Structure):
    _fields_ = [
        ('key', c_char_p),
        ('key_len', c_size_t),
        ('timestamp', c_longlong),
        ('period', c_uint),
        ('initial_time', c_ulonglong),
        ('output_len', c_size_t),
        ('output_base', c_char_p),
        ('output_base_len', c_size_t),
        ('hash_function', c_int),
    ]

def get_totp():
    key = b'12345678901234567890'
    lib_path = find_library('boringauth') or 'target/release/libboringauth.so'
    lib = cdll.LoadLibrary(lib_path)
    cfg = TOTPcfg()
    if lib.boringauth_totp_init(byref(cfg)) != 0:
        return
    cfg.key_len = len(key)
    cfg.key = c_char_p(key)
    code = create_string_buffer(b'\000' * cfg.output_len)
    if lib.boringauth_totp_generate(byref(cfg), code) != 0:
        return
    return str(code.value, encoding="utf-8")

if __name__ == '__main__':
    code = get_totp()
    print('{}'.format(code))